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| author | Horia Geantă <horia.geanta@nxp.com> | 2018-11-08 16:36:31 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-11-16 09:11:03 +0300 |
| commit | c10a53367901b36eec6208f1dbaf53da9fd358bb (patch) | |
| tree | 3f6b759e4dab39e31415f93f7b529c6f36b7454c /drivers/crypto/caam/caamalg_desc.c | |
| parent | d6bbd4eea243951d2543a0f427c9a6bf2835b6f5 (diff) | |
| download | linux-c10a53367901b36eec6208f1dbaf53da9fd358bb.tar.xz | |
crypto: caam/qi2 - add support for Chacha20 + Poly1305
Add support for Chacha20 + Poly1305 combined AEAD:
-generic (rfc7539)
-IPsec (rfc7634 - known as rfc7539esp in the kernel)
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/caam/caamalg_desc.c')
| -rw-r--r-- | drivers/crypto/caam/caamalg_desc.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/crypto/caam/caamalg_desc.c b/drivers/crypto/caam/caamalg_desc.c index 0eb2add7e4e2..7db1640d3577 100644 --- a/drivers/crypto/caam/caamalg_desc.c +++ b/drivers/crypto/caam/caamalg_desc.c @@ -1227,10 +1227,12 @@ EXPORT_SYMBOL(cnstr_shdsc_rfc4543_decap); * @ivsize: initialization vector size * @icvsize: integrity check value (ICV) size (truncated or full) * @encap: true if encapsulation, false if decapsulation + * @is_qi: true when called from caam/qi */ void cnstr_shdsc_chachapoly(u32 * const desc, struct alginfo *cdata, struct alginfo *adata, unsigned int ivsize, - unsigned int icvsize, const bool encap) + unsigned int icvsize, const bool encap, + const bool is_qi) { u32 *key_jump_cmd, *wait_cmd; u32 nfifo; @@ -1267,6 +1269,26 @@ void cnstr_shdsc_chachapoly(u32 * const desc, struct alginfo *cdata, OP_ALG_DECRYPT); } + if (is_qi) { + u32 *wait_load_cmd; + u32 ctx1_iv_off = is_ipsec ? 8 : 4; + + /* REG3 = assoclen */ + append_seq_load(desc, 4, LDST_CLASS_DECO | + LDST_SRCDST_WORD_DECO_MATH3 | + 4 << LDST_OFFSET_SHIFT); + + wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_CALM | JUMP_COND_NCP | + JUMP_COND_NOP | JUMP_COND_NIP | + JUMP_COND_NIFP); + set_jump_tgt_here(desc, wait_load_cmd); + + append_seq_load(desc, ivsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ctx1_iv_off << LDST_OFFSET_SHIFT); + } + /* * MAGIC with NFIFO * Read associated data from the input and send them to class1 and |